Q: What are the prime factors of the number 20,967,925?

 A: 5, 11, 19, 4013

Why are those the prime factors of the number 20,967,925?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 20,967,925

20,967,925
Factor Arrows
54,193,585
Factor Arrows
5838,717
Factor Arrows
1176,247
Factor Arrows
194,013

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

5, 11, 19, 4013

We can check our work by multiplying all of the prime factors together: 5 x 5 x 11 x 19 x 4,013 = 20,967,925

This can also be written as 52 x 111 x 191 x 4,0131 = 20,967,925

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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